Question

what is passive voice​

Answer 1

Passive voice is a grammatical voice common in many languages. In a clause with passive voice, the grammatical subject expresses the theme or patient of the main verb – that is, the person or thing that undergoes the action or has its state changed.

Answer 2

GRAMMAR

a form or set of forms of a verb in which the subject undergoes the action of the verb

Example :They were killed is in active voice
He killed them is in passive voice